Net Positive Suction Head and Cavitation:
Net Positive Suction Head and Cavitation:

Fluid or Liquid Velocity:

Pressure at Impeller Inlet:

Fluid or Liquid Vapor Pressure:

Specific Weight of Fluid or Liquid:

Acceleration of Gravity:

where,
NPSH = Net Positive Suction Head and Cavitation,
V = Fluid or Liquid Velocity,
p = Pressure at Impeller Inlet,
p
v = Fluid or Liquid Vapor Pressure,
SW = Specific Weight of Fluid or Liquid,
g = Acceleration of Gravity.